基于北斗RTK技术的桥梁健康状况分析  

Analysis of Deformation Monitoring Application of Beidou RTK Technology in Large Active Bridges

作　　者：申世国 孙凯 SHEN Shiguo;SUN Kai(Jilin Provincial Basic Surveying and Mapping Institute,Siping Jilin 136000 China)

机构地区：[1]吉林省基础测绘院

出　　处：《北京测绘》2019年第12期1497-1500,共4页Beijing Surveying and Mapping

摘　　要：我国北斗导航系统已经被广泛应用于变形监测领域。随着大型桥梁宽度以及长度的不断增加,桥梁的变形监测以及结构损伤识别更加重要。通常桥梁变形监测只对竖直向扰度进行监测分析,本文则利用北斗载波相位差分技术连续对我国某现役大型桥梁进行连续20小时监测,基于实测数据,首先对北斗监测数据质量进行评估,然后对桥梁水平及竖直方向变形进行分析,最后基于HHT方法识别桥梁的模态参数,为今后现役大型桥梁健康状况分析提供一种可靠技术手段。China Beidou navigation system has been widely used in the field of deformation monitoring.As the width and length of large bridges continue to increase,deformation monitoring of bridges and structural damage identification are more important.Generally,the bridge deformation monitoring only monitors the vertical disturbance.In this paper,the Beidou real-time kinematic technology is used to continuously monitor a large-scale bridge in China for 20 hours.Based on the measured data,the quality of the Beidou monitoring data is evaluated first.The horizontal and vertical deformations of the bridge are analyzed.Finally,the modal parameters of the bridge are identified based on the HHT method,which provides a reliable technical means for the analysis of the health status of the existing large-scale bridges.

关 键 词：北斗 载波相位差分技术(RTK) 桥梁 健康状况 

分 类 号：P228[天文地球—大地测量学与测量工程]